 | Siegel, Karin, Wagner, Thomas, Trumbull, Robert B., Jonsson, Erik, Matalin, Gabriella, Wälle, Markus, Heinrich, Christoph A. (2016) Stable isotope (B, H, O) and mineral-chemistry constraints on the magmatic to hydrothermal evolution of the Varuträsk rare-element pegmatite (Northern Sweden) Chemical Geology, 421. 1-16 doi:10.1016/j.chemgeo.2015.11.025 | Journal (article/letter/editorial) | | hydrothermal evolution of the Varuträsk rare-element pegmatite (Northern Sweden) Karin Siegel a, Thomas Wagner...Resources, Geological Survey of Sweden, Box 670, SE-75128 Uppsala, Sweden e CEMPEG, Department of Earth...Sciences, Uppsala University, SE-75236 Uppsala, Sweden f Department of Earth Sciences, Institute of Geochemistry...evolution of the Varuträsk rare-element pegmatite (Skellefte District, Northern Sweden) has been investigated...tourmaline and coexisting micas, feldspar and quartz. Varuträsk is a classic and typical example of highly fractionated |  | Černý, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite... SE-752 36 Uppsala, Sweden 1 ABSTRACT The complex, petalite-subtype Varuträsk pegmatite in the Proterozoic...Proterozoic rocks of northern Sweden is, as a whole, rather poor in Nb and Ta. The pegmatite consolidated...pegmatites. The degree of cation order in the Varuträsk columbite-group minerals increases from early...minerals and cassiterite in the petalite-subtype Varuträsk pegmatite emphasizes the importance of specific |  | Vignola, P., Diella, V., Ferrari, E. S., Fransolet, A.-M. (2011) COMPLEX MECHANISMS OF ALTERATION IN A GRAFTONITE + SARCOPSIDE + TRIPHYLITE ASSOCIATION FROM THE LUNA PEGMATITE, PIONA, LECCO PROVINCE, ITALY. The Canadian Mineralogist, 49 (3) 765-776 doi:10.3749/canmin.49.3.765 | Journal (article/letter/editorial) | | pegmatite rich in oligoclase, with minor muscovite and schorl, outcropping at Luna, near Piona, Lecco Province...pegmatite, riche en oligoclase, avec muscovite et schorl comme minéraux accessoires, affleurant à Luna,...contain oligoclase and quartz, with muscovite, schorl and almandine-rich garnet as common accessories...process have been reported, for example, at Varuträsk, Sweden (Quensel 1937, Mason 1941), Sidi Bou Othmane...Xinjang Province, China (Li & Shinno 1997) and Berg, Sweden (Smeds et al. 1998). Whereas alteration of triphylite |  | | Journal (article/letter/editorial) | | major-element composition varies systematically from schorl–dravite in the border and wall zones to varicolored...supposed a continuous variation in Li contents from schorl–dravite to elbaite but the SIMS data instead show... The barren pegmatite and leucogranite contain schorl–dravite only. The full range of δ11B values in...trends, whereby the outer zones contain intermediate schorl–dravite with minor excess Al, and the inner zones...measurements on the reference tourmalines dravite, schorl and elbaite (Harvard mineral collection) described |  | | Journal (article/letter/editorial) | | consists of an alternation of dark bands containing schorl + quartz, and light bands containing quartz + albite...the crystals can reach 20 cm in length. Accessory schorl, reaching 1 to 2 cm in length, occurs in the 1534...± small schorl; dark grey zone: inner wall zone (IWZ): graphic K-feldspar + muscovite + schorl ± beryl;...cases showing a graphic texture), large prisms of schorl reaching 10 cm, accessory muscovite, and beryl...in a quartz matrix. Beryl and small crystals of schorl (2 cm maximum) can be present; larger crystals |  | Vignola, P., Diella, V., Oppizzi, P., Tiepolo, M., Weiss, S. (2008) PHOSPHATE ASSEMBLAGES FROM THE BRISSAGO GRANITIC PEGMATITE, WESTERN SOUTHERN ALPS, SWITZERLAND. The Canadian Mineralogist, 46 (3) 635-650 doi:10.3749/canmin.46.3.635 | Journal (article/letter/editorial) | | granitic pegmatite containing muscovite, garnet, schorl, zircon, beryl and Fe–Cu sulfides, but lacking...2) plagioclase + quartz graphic unit containing schorl, 3) coarse-grained plagioclase unit (albite) with...from Nåttarö and Stora Persholmen pegmatites in Sweden by Smeds et al. (1998) and from the Conifer Road...pegmatite-forming melt, whereas the abundance of schorl suggests an appreciable content of boron. These...Switzerland. Mason, B. (1941): Minerals of the Varuträsk pegmatite. XXIII. Some iron–manganese phosphate |  | Baijot, Maxime, Hatert, Frédéric, Dal Bo, Fabrice, Philippo, Simon (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. The Canadian Mineralogist, 52 (2) 373-397 doi:10.3749/canmin.52.2.373 | Journal (article/letter/editorial) | | K-feldpsar which sometimes show graphic intergrowths. Schorl occurs in this matrix and some crystals reach 10... and sulfide minerals Albite Microcline Quartz Schorl Muscovite Spessartine Chamosite Zircon Mn- and...Sidenjsö dike, in the Stora Persholmen pegmatite in Sweden (Smeds et al. 1998), and in the Yellowknife pegmatite...microcline, spodumene, muscovite, schorl, and garnet. Generally, schorl and spodumene do not occur directly...nodules, even if in sample Joc-4, a small grain of schorl (50 µm in length) occurs in the saccharoidal albite |  | | Journal (article/letter/editorial) | | subhedral to anhedral fine to coarse zinnwaldite schorl green elbaite subhedral subhedral subhedral to...coarse fine to medium muscovite biotite plagioclase schorl apatite Fe-Mn phosphates euhedral to subhedral...from schorl-dravite to Mgrich schorl, with a high foitite component in all cases. Mg-rich schorl (with...(with a high foitite component) and Al-rich schorl (with minor vacancies at the X-site) dominate in the LBZ... In the UBZ tourmaline compositions range from schorl-elbaite (green crystals) to elbaite with a high |  | Roda, Encarnación, Pesquera, Alfonso, Fontan, François, Keller, Paul (2004) Phosphate mineral associations in the Cañada pegmatite (Salamanca, Spain) : Paragenetic relationships, chemical compositions, and implications for pegmatite evolution. American Mineralogist, 89 (1) 110-125 doi:10.2138/am-2004-0114 | Journal (article/letter/editorial) | | decimeter-sized masses, together with K-feldspar, schorl, biotite, muscovite, and garnet. In the inner zone...biotite (Fig. 3e). Tourmaline corresponds to the schorl-rich member with 40% of the olenite component,...Tourmaline from the transition zone is rich in schorl with ~40 mol% of the foitite component. The average...occupancy of the Y site (Table 7). Tourmaline is a schorl-rich variety with Fe and Mg contents of ~2.15 and...45, 159–173. Mason, B. (1941) Minerals of the Varuträsk pegmatite. XXIII. Some iron-manganese phosphate |  | | Journal (article/letter/editorial) | | Poland bearing, Li-free intermediate members of the schorl-dravite series (Pieczka and Kraczka 1996), or less...representing a transitional member among the dravite, schorl, and olenite end-members (Pieczka 2007b). With...inner zone. They are also found within chrysoberyl, schorl-dravite intermediate members, spessartine, Mn-rich... Sn, and Sb oxide minerals from the Varuträsk pegmatite, Sweden. In the Szklary pegmatite, the crystallization...columbite-(Mn) indicates that cocrystallizing biotite and schorl could strongly deplete the melt of Fe, Mg, and |  | Sunde, Øyvind, Friis, Henrik, Andersen, Tom, Trumbull, Robert B., Wiedenbeck, Michael, Lyckberg, Peter, Agostini, Samuele, Casey, William H., Yu, Ping (2020) Boron isotope composition of coexisting tourmaline and hambergite in alkaline and granitic pegmatites. Lithos, 352. 105293 doi:10.1016/j.lithos.2019.105293 | Journal (article/letter/editorial) | | host pr rocks. The pegmatite contains abundant schorl and cavities up to 1.5 m3 consisting of e- quartz... al measurements on the reference tourmalines schorl, dravite, and elbaite described by Leeman rn ...significant chemical Jo u matrix effect between schorl-dravite tourmalines and tourmalines of elbaite...compositions typical of the LPC we used the average of all schorl and dravite IMF factors combined, whereas elbaitic...Standard mean error of all measurements for combined schorl-dravite and for elbaite reference samples at 1σ |  | Antunes, Isabel Margarida Horta Ribeiro, Neiva, Ana Margarida Ribeiro, Ramos, João Manuel Farinha, Silva, Paulo Bravo, Silva, Maria Manuela Vinha Guerreiro, Corfu, Fernando (2013) Petrogenetic links between lepidolite-subtype aplite-pegmatite, aplite veins and associated granites at Segura (central Portugal) Geochemistry, 73 (3) 323-341 doi:10.1016/j.chemer.2012.12.003 | Journal (article/letter/editorial) | | (Černý et al., 1985; Charoy and Noronha, 1995). The schorl compositions from the two-mica granite and the...alkali group (Table 7; Fig. 10a and b) and are schorl (Fig. 10c). The main substitution schemes in these...than the primary microlite from the Varuträsk pegmatite, Sweden (Černý et al., 2004) and the Gonçalo...323–341 Fig. 11. Selected variation diagrams of schorl from two-mica granite and aplite veins at Segura...pegmatite melt did not contain sufficient iron to form schorl and lithium to form elbaite, as lithium is mainly |  | Pieczka, Adam, Cooper, Mark A., Hawthorne, Frank C. (2019) Lepageite, Mn32+(Fe73+Fe42+)O3[Sb53+As83+O34], a new arsenite-antimonite mineral from the Szklary pegmatite, Lower Silesia, Poland. American Mineralogist, 104 (7) 1043-1050 doi:10.2138/am-2019-6903 | Journal (article/letter/editorial) | | perthite, quartz, and biotite, with minor Fe3+-bearing schorl-dravite, spessartine, and muscovite. It is relatively...behavior are the well-known pegmatites at Varuträsk (Sweden) with löllingite, arsenopyrite, stibnite,...minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite |  | | Journal (volume) | | fine-grained mica seam. The mica seam also contains schorl, chlorite and sillimanite. Drill holes reveal the...alluaudite occur in the albite pegmatite with accessory schorl, garnet and muscovite. The coarse-grained core... Bulletin 368 of white cleavelandite, quartz, schorl and muscovite. Some of the cleavelandite veins...dike seems to be a rather simple, muscovite- and schorl-bearing microcline pegmatite . At the tip of the...Simpson 1978), Bikita (Cooper 1964), or even Varuträsk (Quensel 1938, 1945). In contrast, low-temperature |  | Gonçalves, , Melgarejo, , Alfonso, , Amores, , Paniagua, , Neto, , Morais, , Camprubí, (2019) The Distribution of Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola. Minerals, 9 (10) 580 doi:10.3390/min9100580 | Journal (article/letter/editorial) | | K-feldspar, quartz, albite, muscovite, green beryl and schorl; it mainly consists of reddish K-feldspar, quartz...quartz, albite, muscovite, green beryl and schorl; it contains contains skeletal of crystals of phosphates...[33] and Mason [34] in the pegmatites of Varuträsk (Sweden), and later located in most of the pegmatite...hydrogen isotopic composition of micas from the Varuträsk rare-element pegmatite was also used as an argument...minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite |  | Novák, Milan, Sejkora, Jiří, Škoda, Radek, Budina, Václav (2008) Bismutotantalite-stibiotantalite-stibiocolumbite assemblage from elbaite pegmatites at Molo near Momeik, northern Shan State, Myanmar. Neues Jahrbuch für Mineralogie - Abhandlungen, 185 (1) 17-26 doi:10.1127/0077-7757/2008/0108 | Journal (article/letter/editorial) | | found in the pegmatites include quartz, albite, schorl and muscovite. Elbaite as a dominat Li-carrier...assemblage sisting of fibrous aggregates of rare black schorl to green elbaite in central parts and dominant...minerals of Nb, Ta, Sn and Sb in the Varuträsk granitic pegmatite, Sweden. – Amer. Miner. 89: 505–518. ČERNÝ |  | | Journal (article/letter/editorial) | | fractions for the M following tourmaline species: schorl (Srl), dravite (Drv), elbaite (Elb), uvite (Uvt)...(Ldd), and ED rossmanite (Rss) (abbreviations for schorl, dravite, elbaite from Whitney and Evans (2010)...toward the pocket grades from 67 total mole percent schorl-olenite-foitite to a total 99 mole percent ros...1991a. Gem-bearing CE pegmatites of San Diego County, California. Geol. Excursions South. Calif. Mex...Three min pegmatite, Ramona district, San Diego County, California. Am. Mineral. 76, 1998–2002. Foord |  | Li, Yin-Chuan, Chen, Hong-Wei, Wei, Hai-Zhen, Jiang, Shao-Yong, Palmer, Martin R., van de Ven, T.G.M., Hohl, Simon, Lu, Jian-Jun, Ma, Jing (2020) Exploration of driving mechanisms of equilibrium boron isotope fractionation in tourmaline group minerals and fluid: A density functional theory study. Chemical Geology, 536. 119466 doi:10.1016/j.chemgeo.2020.119466 | Journal (article/letter/editorial) | | with increasing Mg/(Fe+Mg) ratios in the dravite-schorl solid solution series. This effect, together with...sites in different varieties of tourmaline (e.g., schorl, dravite, etc.). It has been shown that the local...nature. For tourmaline group minerals, the model for schorl is constructed by replacing the three Mg atoms...by three Fe atoms, and these of dravite+Fe and schorl +Mg models are constructed by replacing one Mg...one Fe atom and by replacing one Fe atom of the schorl model with one Mg atom, respectively. The model |  | Novak, M., Cerny, P., Cempirek, J., Srein, V., Filip, J. (2004) FERROTAPIOLITE AS A PSEUDOMORPH OF STIBIOTANTALITE FROM THE LASTOVICKY LEPIDOLITE PEGMATITE, CZECH REPUBLIC; AN EXAMPLE OF HYDROTHERMAL ALTERATION AT CONSTANT Ta/(Ta + Nb) The Canadian Mineralogist, 42 (4) 1117-1128 doi:10.2113/gscanmin.42.4.1117 | Journal (article/letter/editorial) | | symmetrically zoned pegmatite dikes with abundant schorl, biotite, muscovite, andalusite and sekaninaite...minerals of Nb, Ta, Sn and Sb in the Varuträsk granitic pegmatite, Sweden: the case of an “anomalous” columbite–tantalite...Pegmatite–Aplite Dikes in the Mesa Grande District, San Diego County, California. Ph.D. thesis, Stanford University...Rynersonite, Ca(Ta,Nb)2O6, a new mineral from San Diego County, California. Am. Mineral. 63, 709-714. GREEN, T...from the Island of Üto, Stockholm Archipelago, Sweden. Can. Mineral. 37, 665-672. STANĚK, J. (1973): |  | Roda-Robles, E., Pesquera, A., Gil-Crespo, P. P., Torres-Ruiz, J. (2012) THE PUENTEMOCHA BERYL-PHOSPHATE GRANITIC PEGMATITE, SALAMANCA, SPAIN: INTERNAL STRUCTURE, PETROGRAPHY AND MINERALOGY. The Canadian Mineralogist, 50 (6) 1573-1587 doi:10.3749/canmin.50.6.1573 | Journal (article/letter/editorial) | | mica and quartz in the greisen facies, such as schorl, could be represented by the primary phosphate...15, 106-121. Mason, B. (1941): Minerals of the Varuträsk pegmatite. XXIII. Some iron–manganese phosphate...products, with special reference to material from Varuträsk. Geol. Fören. Stockholm Förh. 63, 25-34. the...397-406. Quensel, P. (1937): Minerals of the Varuträsk pegmatite. I. The lithium–manganese phosphates |  | | Journal (article/letter/editorial) | | Harding, New Mexico (Lumpkin 1998a, b), or Varuträsk, Sweden (Čern ý et al. 2004). Studies of CGM in larger...locally with uraninite inclusions, garnet, gahnite, schorl, apatite, pyrite and secondary phosphates. The...minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: the case of an “anomalous” columbite–tantalite...Pegmatite–Aplite Dikes in the Mesa Grande District, San Diego County, California. Ph.D. thesis, Stanford Univ., Stanford...evolution of the Rutherford #2 pegmatite, Amelia County, Virginia: a classic locality revisited. Can. Mineral |  | Hulsbosch, Niels, Boiron, Marie-Christine, Thomas, Rainer, Van Daele, Johanna, Dewaele, Stijn, Muchez, Philippe (2019) Evaluation of the petrogenetic significance of melt inclusions in pegmatitic schorl-dravite from graphic tourmaline-quartz assemblages: Application of LA-ICP-QMS analyses and volume ratio calculations. Geochimica et Cosmochimica Acta, 244. 308-335 doi:10.1016/j.gca.2018.10.023 | Journal (article/letter/editorial) | | petrogenetic significance of melt inclusions in pegmatitic schorl-dravite from graphic tourmaline-quartz assemblages:...petrogenetic significance of melt inclusions in pegmatitic schorl-dravite from graphic tourmalinequartz assemblages:...petrogenetic significance of melt inclusions in pegmatitic schorl-dravite from graphic tourmaline-quartz assemblages:...microprobe. The analysed melt inclusions are hosted in schorl-dravite series tourmaline from the early-Neoproterozoic...and are cogenetically trapped with the MI’s in schorl-dravite (Hulsbosch et al., 2017), which are studied |  | | Journal (volume) | | mineralogy. They may include as accessory minerals schorl, apatite, zircon and sometimes andalusite, cordierite...rather rich in iron and magnesium and belong to the schorl-dravite series. When in association with Fe-Mg...Post, Kenya (Richardson 1975). Rose muscovite, Varuträsk, Swede n (Berggren 1941). Rose muscovite, Goshen...fillings. Tourmaline Tourmaline, which is often schorl (black tourmaline) in the pegmatites of the area...mineral, particularly in the dykes in schists. The schorl crystals are often 0.5 to 3.0 cm in diameter, although |  | | Journal (volume) | | pegmatites from Sveconorwegian terranes in southwestern Sweden. Precambrian Research 76, 15-30. Simmons, W.B....and W sites. Both tourmalines classify as fluor-schorl (Ertl et al. 2016). The RK sample has minor (fluor-)dravite...parameter a and Li content of members of the elbaite-schorl series (Ertl et al. 2010). The mean T–O bond lengths...compositions varied from foitite [X□Y(Fe2+2Al)] to schorl [XNaYFe2+3], to elbaite [XNaY(Li1.5Al1.5)] and...(2015): Cation ordering at octahedral sites in schorl-dravite series tourmalines. The Canadian Mineralogist |  | Černý, P., Teertstra, D. K., Chapman, R., Selway, J. B., Hawthorne, F. C., Ferreira, K., Chackowsky, L. E., Wang, X.-J., Meintzer, R. E. (2012) Extreme fractionation and deformation of the leucogranite-pegmatite suite at Red Cross Lake, Manitoba, Canada. IV. Mineralogy. The Canadian Mineralogist, 50 (6) 1839-1875 doi:10.3749/canmin.50.6.1839 | Journal (article/letter/editorial) | | (fluorapatite) (fluorapatite) ((lithiophilite)) (schorl) — [((carb.-bearing fluorapatite))] [((rutile))](dravite)...(foitite) — ((tantalite-(Mn)) ((holmquistite)) — ((schorl)) schorl — (wodginite) ((titanite)) — — — (elbaite)...tourmaline of the CGR intrusion corresponds to schorl, with low Ca and F, modest Mg and low YAl contents...at red cross lake, manitoba higher than in the schorl of the CGR intrusion (Fig. 12C); some compositions...Elb: elbaite, Foi: foitite, Rsm: rossmanite, Srl: schorl. 1853 TABLE 10. REPRESENTATIVE COMPOSITIONS OF |
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